A very warm and unstable airmass was in place over Iowa, as had been the case for the past several days.  A cold front sank southeast into the state during the afternoon and evening hours.  The freezing level was very high, ranging from 15,500 to 17,000 feet across the area.  The lifted indices were in the -8 range by late afternoon.  There was considerable cloud debris over the northern part of the CWA, however clearing set in across the south.  Temperatures soared into the mid 90s with dew point readings in the low to mid 70s.  Plenty of CAPE was available with values by late afternoon in the 3500 to 4000 J/kg range.  Thunderstorms fired along the front and became severe.  The storms did not remain severe for very long as in spite of the linear presentation on radar, the storms became multi-cellular.  The cloud shield and outflow from the storms diminished their intensity within 90 minutes of the storms becoming severe.  During the early stages of the line, a tornado dropped down into Kossuth County south of Algona.  The tornado tracked across a corn field and hit a two year old shed.  The shed was 60 X 90 feet and was damaged significantly.  The farmhouse was damaged with siding pulled off of it, however it was not directly struck.  There were numerous reports of high winds of 60 up to 75 MPH across the west central into the north central counties.  Numerous trees were damaged or toppled and some crop damage was reported.  One of the stronger storms produced winds high enough to topple 3 power poles north of Aspinwall in Crawford County.  Hail from the storms was quite limited, though spotty reports of up to dime size hail were received.  One storm did produce quarter size hail in Crawford southeast of Vail during the initial stages of the storm development.

Thunderstorm Wind in WEBSTER, IOWA
From 25-JUL-05 18:07:00 to 25-JUL-05 18:07:00 (CST)
Location: FT DODGE
Magnitude: 52 EG
Property damage: 2K
Crop damage: 1K
Reported by: TRAINED SPOTTER

Thunderstorm Wind in CRAWFORD, IOWA
From 25-JUL-05 17:50:00 to 25-JUL-05 17:50:00 (CST)
Location: MANILLA
Magnitude: 52 EG
Property damage: 2K
Reported by: TRAINED SPOTTER

Tornado in KOSSUTH, IOWA
From 25-JUL-05 18:02:00 to 25-JUL-05 18:04:00 (CST)
Location: ALGONA
Tornado F-scale: F0
Property damage: 30K
Crop damage: 2K
Reported by: EMERGENCY MANAGER

Tornado touched down in field, then tracked across field hitting a 60  X 90 foot shed.  The shed was 2 years old and was damaged.

Thunderstorm Wind in HUMBOLDT, IOWA
From 25-JUL-05 18:25:00 to 25-JUL-05 18:25:00 (CST)
Location: HUMBOLDT
Magnitude: 50 EG
Property damage: 2K
Reported by: LAW ENFORCEMENT

Thunderstorm Wind in CRAWFORD, IOWA
From 25-JUL-05 17:40:00 to 25-JUL-05 17:40:00 (CST)
Location: MANILLA
Magnitude: 50 EG
Property damage: 5K
Reported by: EMERGENCY MANAGER

Thunderstorm Wind in GREENE, IOWA
From 25-JUL-05 18:20:00 to 25-JUL-05 18:20:00 (CST)
Location: SCRANTON
Magnitude: 52 EG
Property damage: 2K
Reported by: GENERAL PUBLIC

Thunderstorm Wind in HAMILTON, IOWA
From 25-JUL-05 18:55:00 to 25-JUL-05 18:55:00 (CST)
Location: WEBSTER CITY
Magnitude: 50 EG
Property damage: 2K
Crop damage: 1K
Reported by: TRAINED SPOTTER

Thunderstorm Wind in CARROLL, IOWA
From 25-JUL-05 17:55:00 to 25-JUL-05 17:55:00 (CST)
Location: MANNING
Magnitude: 50 EG
Property damage: 2K
Reported by: TRAINED SPOTTER

Thunderstorm Wind in CRAWFORD, IOWA
From 25-JUL-05 18:20:00 to 25-JUL-05 18:20:00 (CST)
Location: MANILLA
Magnitude: 60 EG
Property damage: 2K
Crop damage: 1K
Reported by: TRAINED SPOTTER

Thunderstorm Wind in CARROLL, IOWA
From 25-JUL-05 17:55:00 to 25-JUL-05 17:55:00 (CST)
Location: CARROLL
Magnitude: 52 EG
Property damage: 5K
Reported by: LAW ENFORCEMENT

Thunderstorm Wind in CRAWFORD, IOWA
From 25-JUL-05 17:50:00 to 25-JUL-05 17:50:00 (CST)
Location: ASPINWALL
Magnitude: 65 EG
Property damage: 5K
Crop damage: 2K
Reported by: EMERGENCY MANAGER

Hail in CRAWFORD, IOWA
From 25-JUL-05 17:15:00 to 25-JUL-05 17:15:00 (CST)
Location: VAIL
Magnitude: 1.00 
Property damage: 2K
Crop damage: 5K
Reported by: GENERAL PUBLIC

Thunderstorm Wind in AUDUBON, IOWA
From 25-JUL-05 18:00:00 to 25-JUL-05 18:00:00 (CST)
Location: GRAY
Magnitude: 52 EG
Property damage: 1K
Reported by: GENERAL PUBLIC

Thunderstorm Wind in CARROLL, IOWA
From 25-JUL-05 18:10:00 to 25-JUL-05 18:10:00 (CST)
Location: GLIDDEN
Magnitude: 50 EG
Property damage: 2K
Crop damage: 1K
Reported by: TRAINED SPOTTER

Thunderstorm Wind in FRANKLIN, IOWA
From 25-JUL-05 19:17:00 to 25-JUL-05 19:17:00 (CST)
Location: SHEFFIELD
Magnitude: 52 EG
Property damage: 2K
Crop damage: 5K
Reported by: TRAINED SPOTTER